Harper Lee's lawyer teases possible third book

Harper Lee's lawyer Tonja Carter was instrumental in the publication of Lee's new book, Go Set a Watchman, and for her next trick, Carter hints that Lee might have another unpublished manuscript in store. In an op-ed for TheWall Street Journal called "How I Found the Harper Lee Manuscript," Carter reveals how she accidentally found the Watchman manuscript in Lee's safe-deposit box in 2011, during a Sotheby's appraisal of the author's assets.

At first, she writes, she thought the manuscript was simply an earlier Mockingbird draft, but after learning of the existence of Watchman from Lee's family, she went back to the pages and realized she had an entirely new novel on her hands.

22PHOTOS

Harper Lee

See Gallery

Harper Lee's lawyer teases possible third book

WASHINGTON - NOVEMBER 05: Pulitzer Prize winner and 'To Kill A Mockingbird' author Harper Lee smiles before receiving the 2007 Presidential Medal of Freedom in the East Room of the White House November 5, 2007 in Washington, DC. The Medal of Freedom is given to those who have made remarkable contributions to the security or national interests of the United States, world peace, culture, or other private or public endeavors. (Photo by Chip Somodevilla/Getty Images)

WASHINGTON - NOVEMBER 05: U.S. President George W. Bush (L) greets Harper Lee (C), Pulitzer Prize winner and the author of 'To Kill A Mockingbird,' after he presented her with a Presidential Medal of Freedom during a ceremony for the 2007 recipients in the East Room of the White House November 5, 2007 in Washington, DC. The Medal of Freedom is given to those who have made remarkable contributions to the security or national interests of the United States, world peace, culture, or other private or public endeavors. (Photo by Chip Somodevilla/Getty Images)

Author of To Kill a Mockingbird Harper Lee, in local courthouse while visiting her home town. (Photo by Donald Uhrbrock/The LIFE Images Collection/Getty Images)

Author of To Kill a Mockingbird Harper Lee, while visiting her home town. (Photo by Donald Uhrbrock/The LIFE Images Collection/Getty Images)

Author of To Kill a Mockingbird Harper Lee, while visiting her home town. (Photo by Donald Uhrbrock/The LIFE Images Collection/Getty Images)

Author of To Kill a Mockingbird Harper Lee, in her father's law office while visiting her home town. (Photo by Donald Uhrbrock/The LIFE Images Collection/Getty Images)

Author of To Kill a Mockingbird Harper Lee with her father. (Photo by Donald Uhrbrock/The LIFE Images Collection/Getty Images)

Get your first look at our cover for Harper Lee’s #GoSetAWatchman. http://t.co/AUp2W1j0lE http://t.co/SG5QBMMYLN

We are thrilled to share the official cover of Harper Lee's #GoSetaWatchman with you all! @GSAWatchmanBook http://t.co/RJlkUuhgQW

Author of To Kill a Mockingbird Harper Lee, while visiting her home town. (Photo by Donald Uhrbrock/The LIFE Images Collection/Getty Images)

394238 02: Shoppers read about a Chicago program involving the 40th anniversary edition of Harper Lee's Pulitzer Prize winning novel 'To Kill A Mockingbird' September 10, 2001 at a Borders Books and Music store in Chicago. Borders Books and Music in Chicago is working with the City of Chicago and the Chicago Public Library in the new citywide reading initiative: 'One Book, One Chicago,' encouraging all Chicagoans to read and discuss the book during the months of September and October. (Photo by Tim Boyle/Getty Images)

A struggle takes place between Jem and Scout Finch (Phillip Alford and Mary Badham, centre) in a 'To Kill A Mockingbird', directed by Robert Mulligan, 1962. (Photo by Silver Screen Collection/Getty Images)

Publicity still portrait of American actor Brock Peters in the film 'To Kill a Mockingbird,' 1962. (Photo by John D. Kisch/Separate Cinema Archive/Getty Images)

Left to right: Estelle Evans (1906 - 1985) as Calpurnia, Phillip Alford as Jem and Mary Badham as Scout, in 'To Kill A Mockingbird', directed by Robert Mulligan, 1962. (Photo by Silver Screen Collection/Getty Images)